基于正负斜率线性调频脉冲信号的一种新的测速方法

A new algorithm of measuring velocity based on chirp up and chirp down signals

提出了一种基于正负斜率线性调频脉冲信号进行目标测速的方法,通过分析两次MTD后的距离维信息和多普勒维信息,分别对速度进行了初步估计和精确测量。综合两次MTD结果得到了目标的实际速度,并推导出了脉冲占空比和速度测量误差的关系式。仿真表明了此方法的正确性,且具有一定的应用价值。

A method based on chirp up and chirp down signals for velocity measurement is presented. Trough analyzing range information and Doppler information obtained in twice MTD processes, velocity is measured cursorily and precisely. By synthesizing twice MTD results, actual velocity of the target is gained. Relation between pulse duty ratio and velocity measurement error is deduced. Correctness and practical application value of this method are proved by the simulation results.